Difference nyquil dayquil

Cons. • Can cause eye pain and stinging. • Dilating effects can last for up to 7 hours ( or longer) • The 10% strength can raise blood pressure in people with certain heart or thyroid problems. Pros. • Can treat a wide variety of common cold or flu symptoms. • More convenient to take three medications in a single dose.

With this DayQuil and NyQuil Combo pack, you'll have the cold and flu multi-symptom relief you need on hand, day and night. When you have a cold and need to get a good night's sleep, NyQuil helps relieve headache, fever, sore throat, minor aches and pains, sneezing, runny nose, and cough. For powerful, non-drowsy daytime relief so you can get ...DayQuil. DayQuil combination OTC products usually contain acetaminophen (for fever and pain), dextromethorphan (for coughing fits), and phenylephrine (for stuffy nose). Mucinex. Mucinex (guaifenesin) is an expectorant that helps relieve chest congestion. An expectorant is a medication that helps you cough up mucus …Common side effects of DayQuil include dizziness, nausea, and upset stomach. However, most people are able to take DayQuil without experiencing side effects. When they occur, most of DayQuil’s side effects go away on their own or are easy to manage. But taking too much has the potential to lead to serious side effects, such as …Jan 22, 2024 · The difference between NyQuil and DayQuil is the third ingredient, that’s Doxylamine for NyQuil and Phenylephrine for DayQuil. Doxylamine is an antihistamine which controls allergy symptoms. Phenylephrine is a decongestant. Dayquil Cold and Flu is a combination of three active ingredients: acetaminophen (an analgesic), dextromethorphan (a cough suppressant), and phenylephrine (a decongestant). Dayquil Cold and Flu helps treat symptoms from the common cold and flu in adults and children. It can relieve stuffy nose, cough, sore throat, headache, aches, and fever.info. Are you looking for information on NyQuil Cold and Flu (acetaminophen / dextromethorphan / doxylamine) instead? When does Dayquil Cold and Flu start …

Even if you don't eat it, simply cooking this recipe for the lols could still harm you. The FDA does not want you to cook your chicken in NyQuil. Nobody, in fact, wants to cook the...The difference between Nyquil and Zzzquil is that Nyquil can be used for relieving colds, coughs, fever, and sleeplessness. Whereas, Zzzquil can be used only for having a good night’s sleep and does not provide relief from other issues. ... Even Dayquil contains the same ingredients as Nyquil and serves the same purposes, just without …Nov 30, 2022 · Answer. Mucinex and NyQuil are both over-the-counter products that are used to treat symptoms of the cold and flu. However, they contain different active ingredients. Mucinex contains guaifenesin, an expectorant, while NyQuil is a combination ingredient product, containing: So, as a general point, since NyQuil contains more drugs than Mucinex ... DayQuil and NyQuil are both popular over-the-counter medications used to relieve symptoms of cold and flu. While they share similar brand names, these two products have distinct differences in their ingredients and intended uses.One of the main differences between the two medications is that Nyquil contains a sedative, while Dayquil does not. Nyquil also contains a higher dose of acetaminophen, the active pain reliever in both medications. However, Dayquil contains a decongestant, phenylephrine, which Nyquil does not.Dayquil Cold and Flu is a combination of three active ingredients: acetaminophen (an analgesic), dextromethorphan (a cough suppressant), and phenylephrine (a decongestant). Dayquil Cold and Flu helps treat symptoms from the common cold and flu in adults and children. It can relieve stuffy nose, cough, sore throat, headache, aches, and fever. We would like to show you a description here but the site won’t allow us. We would like to show you a description here but the site won’t allow us.

The product was initially tested under the DayQuil brand name, but research didn’t show any perceived benefits by associating it with NyQuil. To help promote the non-drowsy product benefit, the DayCare product is given a sunny orange color to signify daytime.Mar 26, 2024 · Phenylephrine 5 mg. Guaifenesin 200 mg. The children’s dosage for DayQuil Severe is as follows: Ages 12 and older: Give 30 mL by mouth every 4 hours as needed. Don’t give more than 4 doses (120 mL) in 24 hours. Ages 6 to 11: Give 15 mL by mouth every 4 hours as needed. Don’t give more than 4 doses (60 mL) in 24 hours. Dayquil Cold and Flu is a combination of three active ingredients: acetaminophen (an analgesic), dextromethorphan (a cough suppressant), and phenylephrine (a decongestant). Dayquil Cold and Flu helps treat symptoms from the common cold and flu in adults and children. It can relieve stuffy nose, cough, sore throat, headache, aches, and fever. It is manufactured and sold by Vicks, a U.S. medicine company. NyQuil provides temporary relief for coughing, headaches, stuffy and runny nose, sore throat, fever, and sneezing. It also helps people with cold symptoms sleep through the night. While it provides relief for cold symptoms, it is not a cure for the common cold or the flu.NyQuil Contains More Ingredients. In addition to the difference in antihistamines, Nyquil contains additional ingredients for the treatment of cough/cold symptoms. ZzzQuil contains diphenhydramine as the only ingredient. It is intended solely for use as a nighttime sleep aid. NyQuil on the other hand contains additional ingredients:

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Additionally, Nyquil can cause drowsiness, so it’s important to avoid driving or operating heavy machinery after taking it. More Examples Of Theraflu & Nyquil Used In Sentences. In order to gain a better understanding of the differences between Theraflu and Nyquil, it can be helpful to see how these medications are used in real-life situations.ADD this Infographic to your Website/Blog: Simply copy the code below and paste it into the HTML of your blog or website: More Health and Fitness News & Tips at Greatist. Targeting...The biggest difference between ZzzQuil and NyQuil is that NyQuil was designed to relieve cold and flu symptoms like sneezing, sore throat, headache, fever, runny nose, and cough. While it also makes you sleepy, it should only be taken when you’re sick because it has other active ingredients. If you’re having trouble falling or staying ...A: NyQuil comes as a liquid or gel caps. NyQuil relieves your sneezing, sore throat, headache, minor aches and pains, fever, runny nose, and cough, so you can get the rest you need. NyQuil SEVERE delivers maximum symptom-fighting ingredients to relieve your worst cold symptoms at night. NyQuil Cough Suppressant relieves your cough so you …Summary: 1.NyQuil and DayQuil are both medications for common colds that can be bought even without doctor’s prescription. 2.NyQuil contains antihistamine while DayQuil has nasal decongestant. But, both contain acetaminophen and cough suppressant.

The most significant difference between DayQuil and NyQuil lies in their intended use. DayQuil is designed for daytime use, providing relief without causing drowsiness. On the other hand, NyQuil is formulated specifically for use at night, helping to promote a sound and uninterrupted sleep.The difference between DayQuil and NyQuil. NyQuil for sleep and DayQuil for sleep in both their liquid and pill forms can be used to help provide relief for common symptoms associated with a cold and flu. There’s one key difference between the two: NyQuil will cause drowsiness, while DayQuil is a non-drowsy drug.Dayquil and Nyquil are ubiquitous in American medicine cabinets. Everyone knows that Dayquil helps alleviate the symptoms of flu and cold without causing drowsiness like Nyquil. Just like myths about banana spiders, there are plenty of misconceptions surrounding this ability. People often claim that the difference between …From the world's #1 selling OTC cough and cold brand, Vicks DayQuil and NyQuil Liqid Medicine: provides fast, powerful relief for your worst cold and flu symptoms. With this DayQuil and NyQuil Liquid combo pack: you'll have the cold and flu multi-symptom relief you need on hand, day and night.When you have a cold and need to get a good night's …Dayquil Cold and Flu is a combination of three active ingredients: acetaminophen (an analgesic), dextromethorphan (a cough suppressant), and phenylephrine (a decongestant). Dayquil Cold and Flu helps treat symptoms from the common cold and flu in adults and children. It can relieve stuffy nose, cough, sore throat, headache, aches, and fever.NyQuil Severe Cold Flu, Max Strength, Berry – 12 oz. What is the difference between red and green NyQuil? Probably bc NyQuil was green DayQuil new, so the consumer’s mental association would be sleep/green. Also, red is energetic.Red cherry.Green odd taste you’ll only consume if you need sleep.When you need fast, powerful cold and flu relief, turn to Vicks DayQuil and Nyquil. DayQuil and NyQuil are the #1 pharmacist recommended daytime and nighttime cough, cold & flu brands* NyQuil: Active ingredients per 30 mL dose for adults are acetaminophen 650 mg (pain reliever/fever reducer), dextromethorphan HBr 30 mg (cough suppressant), and ...Answer. Mucinex and NyQuil are both over-the-counter products that are used to treat symptoms of the cold and flu. However, they contain different active ingredients. Mucinex contains guaifenesin, an expectorant, while NyQuil is a combination ingredient product, containing: So, as a general point, since NyQuil contains more drugs than Mucinex ...Exact Answer: 4 to 6 hours. Dayquil is a drug that is used to battle the symptoms of cold and flu in an individual. It is a mixture of acetaminophen, dextromethorphan, and phenylephrine. The drug helps assuage symptoms like fever, cough, cold, nasal congestion, headaches, etc. It is used mostly during the day to relieve …2 BOTTLES - 1 DAYQUIL/1 NYQUIL; 8 FL OZ (236 mL) EACH; TOTAL 16 FL OZ (472 mL) INGREDIENTS AND APPEARANCE. VICKS DAYQUIL AND VICKS NYQUIL HIGH BLOOD PRESSURE COLD AND FLU acetaminophen, dextromethorphan hydrobromide, doxylamine succinate kit: Product Information: Product Type: HUMAN …

Bottom Line – Sudafed vs Dayquil. Sudafed (active ingredient – pseudoephedrine) is a medication that shrinks blood vessels in the nasal passages. This decongestant is used to treat sinus and nasal congestion. DayQuil Cold & Flu (active ingredients – acetaminophen, phenylephrine, and dextromethorphan) is a combination …

Summary: 1.NyQuil and DayQuil are both medications for common colds that can be bought even without doctor’s prescription. 2.NyQuil contains antihistamine while DayQuil has nasal decongestant. But, both contain acetaminophen and cough suppressant.NyQuil Contains More Ingredients. In addition to the difference in antihistamines, Nyquil contains additional ingredients for the treatment of cough/cold symptoms. ZzzQuil contains diphenhydramine as the only ingredient. It is intended solely for use as a nighttime sleep aid. NyQuil on the other hand contains additional ingredients:Vicks NyQuil VapoCOOL provides maximum strength 9-symptom relief. Vicks NyQuil VapoCOOL nighttime cold medicine helps treat coughing, sneezing, stuffy nose, minor aches and pains, sinus congestion, sinus pressure, sore throat, headache, and fever. Use when you need fast, powerful nighttime relief from your cold symptoms so you can rest. What is the difference between Vicks NyQuil Cold & Flu Nighttime Relief Liquid and Vicks DayQuil Cold & Flu Relief LiquiCaps? Find out which is better and their overall performance in the painkiller ranking. nausea, pain in your upper stomach, itching, loss of appetite, dark urine, clay-colored stools, jaundice (yellowing of your skin or eyes); or. dangerously high blood pressure (severe headache, blurred vision, buzzing in your ears, anxiety, chest pain, uneven heartbeats, seizure). Common side effects of DayQuil Severe Cold and Flu may include ...VICKS DAYQUIL AND VICKS NYQUIL HIGH BLOOD PRESSURE COLD AND FLU- acetaminophen, dextromethorphan hydrobromide, doxylamine succinate kit If this SPL contains inactivated NDCs listed by the FDA initiated compliance action, they will be specified as such.Clinically reviewed on 05-01-2024. Mucinex and NyQuil are both very popular over-the-counter cold and flu medications, the main difference being their active ingredients. Mucinex contains guaifenesin as an active ingredient, whereas NyQuil is a combination drug containing acetaminophen, dextromethorphan, and doxylamine.Investing in the major grain categories of wheat, soybeans and corn provides exposure to an alternate asset class with different performance potential than the standard stock and b...Pros. • Available as a tablet, oral liquid, and dissolvable granules. • Available over the counter without a prescription. • Sugar-free options available, so okay to use for people with high blood sugar. • Works within 30 minutes to help lessen cough. Cons. • Not meant to be used long-term. • Might need to take multiple times a day ...Because both cold viruses and flu viruses cause similar symptoms, so it’s not easy to tell the difference as you experience one of them. 1,2. Colds and flu also have similar treatments. Over-the-counter products like DayQuil and NyQuil …

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NyQuil is intended for use at night. While DayQuil is specifically developed to treat cold and flu symptoms throughout the day. DayQuil is recommended, though, to remain alert throughout the day. …Tracking secondary deals gives us insight into how investors are thinking about a company's valuation and exit timeline. Venture capitalists and startup founders alike went into 20...If someone’s feeling terrible, with a cough, a cold, or a fever, DayQuil or NyQuil will help because they have multiple [active ingredients],” Amin said. ©2023 The Philadelphia Inquirer.Bottom Line – Sudafed vs Dayquil. Sudafed (active ingredient – pseudoephedrine) is a medication that shrinks blood vessels in the nasal passages. This decongestant is used to treat sinus and nasal congestion. DayQuil Cold & Flu (active ingredients – acetaminophen, phenylephrine, and dextromethorphan) is a combination …Below, are the main differences between DayQuil and NyQuil: Phenylephrine (contained in DayQuil but not NyQuil) Doxylamine (contained in NyQuil but not DayQuil) Alcohol (NyQuil contains 10%, DayQuil is alcohol-free) Phenylephrine is the nasal decongestant contained in DayQuil. It is not contained in NyQuil as it can cause …Theraflu vs Nyquil – Differences. Theraflu (active ingredients – pheniramine, acetaminophen, and phenylephrine) is a combination medicine that is used to relieve symptoms due to a cold, including body aches, fever, nasal and sinus congestion, and sore throat. Nyquil (active ingredients – doxylamine, dextromethorphan, and acetaminophen) is ...DayQuil and NyQuil COMPLETE™ + Vicks VapoCOOL Cold & Flu provide fast and effective, all-in-one cold & flu symptom relief, with a cooling flavour sensation that will ripple through your senses. DayQuil COMPLETE + Vicks VapoCOOL relieves: nasal congestion and pain, chest congestion, cough due to cold, cough with phlegm, sore throat pain ...Pros. • Available as a tablet, oral liquid, and dissolvable granules. • Available over the counter without a prescription. • Sugar-free options available, so okay to use for people with high blood sugar. • Works within 30 minutes to help lessen cough. Cons. • Not meant to be used long-term. • Might need to take multiple times a day ...Investing in the major grain categories of wheat, soybeans and corn provides exposure to an alternate asset class with different performance potential than the standard stock and b...The Klosebuy app is a digital advertising app that geolocates your small business so consumers can find you as soon as you subscribe, and much more. Klosebuy is a digital advertisi... ….

It’s important to note that Dayquil and Nyquil are not interchangeable. Dayquil is meant to be taken during the day, while Nyquil is meant to be taken at night. This is because Nyquil contains an ingredient called doxylamine succinate, which can make you drowsy.First and foremost, there are several products in the NyQuil family, and there is a 'stronger' version of it, known as NyQuil Severe. 'Regular' NyQuil contains all of the following medications: NyQuil Severe contains all of the above with the addition of the nasal decongestant phenylephrine. So, if you are taking the regular version of NyQuil ...DayQuil Cold & Flu High Blood Pressure Liquid Medicine provides maximum strength relief for your worst cold & flu symptoms in a non-drowsy formula so you can get on with your day. DayQuil High Blood Pressure is sugar free and alcohol free. DayQuil High Blood Pressure is also decongestant free, unlike some ordinary cold medicines. Helps treat ...Dayquil Cold and Flu helps treat symptoms from the common cold and flu in adults and children. It can relieve stuffy nose, cough, sore throat, headache, aches, and fever. Besides Dayquil Cold and Flu, this medication is available under many other brand names and as a generic. It's available as pills and a liquid that's typically taken every 4 ...Helps treat bothersome symptoms like headache, fever, nasal congestion, stuffy nose, sore throat & cough. DayQuil™ and NyQuil™ SEVERE Maximum Strength Cough, Cold & Flu Relief LiquiCaps™ Co-Pack are formulated with maximum symptom-fighting ingredients to relieve your worst cold symptoms.*. With this co-pack, you can get the maximum ...Theraflu vs Nyquil – Differences. Theraflu (active ingredients – pheniramine, acetaminophen, and phenylephrine) is a combination medicine that is used to relieve symptoms due to a cold, including body aches, fever, nasal and sinus congestion, and sore throat. Nyquil (active ingredients – doxylamine, dextromethorphan, and …Vicks DayQuil Cough DM + Congestion is a non-drowsy daytime medicine that coats and soothes your throat and is specially formulated to relieve cough, chest congestion, nasal congestion, and thin and loosen mucus so you can power through your day. Vicks DayQuil is the #1 pharmacist recommended nighttime cough, cold & flu brand*. Shop Products.We would like to show you a description here but the site won’t allow us. Difference nyquil dayquil, The difference between NyQuil and DayQuil is the third ingredient, that’s Doxylamine for NyQuil and Phenylephrine for DayQuil. ... As I just stated, NyQuil and DayQuil can not be taken at the same time, but they can be taken on the same day by changing the time of these meds. DayQuil, as its name indicates, should be used during …, And he has a fix. Elon Musk suggested today that “range anxiety”—the malady that afflicts electric car drivers fearing that they will run out of charge in a bad neighborhood, at ni..., Vicks DayQuil VapoCOOL provides fast, powerful, maximum strength 9-symptom relief you can feel. Helps treat coughing, stuffy nose, minor body pain, chest congestion, sinus congestion, sinus pressure, sore throat, headache, and fever. Use when you need fast, non-drowsy daytime relief for your cold symptoms. Shop Products., American Airlines has a secret invitation-only elite status called Concierge Key for its most-valuable customers. Now, some CKs are being hit up for more money. For years, American..., DayQuil and NyQuil COMPLETE™ + Vicks VapoCOOL Cold & Flu provide fast and effective, all-in-one cold & flu symptom relief, with a cooling flavour sensation that will ripple through your senses. DayQuil COMPLETE + Vicks VapoCOOL relieves: nasal congestion and pain, chest congestion, cough due to cold, cough with phlegm, sore throat pain ... , With this DayQuil and NyQuil Liquid combo pack: you'll have the cold and flu multi-symptom relief you need on hand, day and night.When you have a cold and need to get a good night's sleep, NyQuil nighttime medicine will temporarily relieve headaches, fever, sore throat, minor aches and pains, sneezing, runny nose, and cough. For powerful, non ..., Jul 20, 2022 · NyQuil Severe Cold Flu, Max Strength, Berry – 12 oz. What is the difference between red and green NyQuil? Probably bc NyQuil was green DayQuil new, so the consumer’s mental association would be sleep/green. Also, red is energetic.Red cherry.Green odd taste you’ll only consume if you need sleep. , info. Are you looking for information on NyQuil Cold and Flu (acetaminophen / dextromethorphan / doxylamine) instead? When does Dayquil Cold and Flu start …, Below, are the main differences between DayQuil and NyQuil: Phenylephrine (contained in DayQuil but not NyQuil) Doxylamine (contained in NyQuil but not DayQuil) Alcohol (NyQuil contains 10%, DayQuil is alcohol-free) Phenylephrine is the nasal decongestant contained in DayQuil. It is not contained in NyQuil as it can cause insomnia or alertness ..., A: NyQuil comes as a liquid or gel caps. NyQuil relieves your sneezing, sore throat, headache, minor aches and pains, fever, runny nose, and cough, so you can get the rest you need. NyQuil SEVERE delivers maximum symptom-fighting ingredients to relieve your worst cold symptoms at night. NyQuil Cough Suppressant relieves your cough so you …, ADD this Infographic to your Website/Blog: Simply copy the code below and paste it into the HTML of your blog or website: More Health and Fitness News & Tips at Greatist. Targeting..., Nyquil Cold & Flu (Acetaminophen, Chlorpheniramine, And Dextromethorphan) received an overall rating of 8 out of 10 stars from 2 reviews. See what others have said about Nyquil Col..., A committee advising the US airline regulator has concluded that hand-held electronic devices can be connected to Wi-Fi at all points in a flight, according to the Wall Street Jour..., Nyquil Cold & Flu (Acetaminophen, Chlorpheniramine, And Dextromethorphan) received an overall rating of 8 out of 10 stars from 2 reviews. See what others have said about Nyquil Col..., Because both cold viruses and flu viruses cause similar symptoms, so it’s not easy to tell the difference as you experience one of them. 1,2. Colds and flu also have similar treatments. Over-the-counter products like DayQuil and NyQuil …, nausea, pain in your upper stomach, itching, loss of appetite, dark urine, clay-colored stools, jaundice (yellowing of your skin or eyes); or. dangerously high blood pressure (severe headache, blurred vision, buzzing in your ears, anxiety, chest pain, uneven heartbeats, seizure). Common side effects of DayQuil Severe Cold and Flu may include ..., GREAT-TASTING HONEY FLAVORED DAYQUIL AND NYQUIL: Get the same cold & flu relief you expect from DayQuil & NyQuil SEVERE in a great-tasting honey-licious flavor POWERFUL, MAXIMUM STRENGTH 9-SYMPTOM RELIEF DAY AND NIGHT: Use non-drowsy DayQuil SEVERE Honey for daytime and at night try NyQuil SEVERE Honey for fast relief so you can rest, Problems Taking NyQuil And DayQuil At The Same Time. The primary reason you don't want to take NyQuil and DayQuil at the same time is that they share some of the same drugs (e.g. dextromethorphan and acetaminophen). The big concern here is taking too much acetaminophen as both contain 650 mg per dose (a dose of either product is 30 …, nasal congestion. minor aches and pains. headache. sore throat. DayQuil is made for use during the day. Unlike NyQuil, it doesn’t contain the active ingredient doxylamine, which..., Summary. Sudafed (pseudoephedrine) is a non-drowsy decongestant taken by mouth to treat nasal and sinus congestion from allergies and the common cold. It's available in a short-acting version that's taken once every 4 to 6 hours. It also comes in longer-acting versions that are taken every 12 or 24 hours, depending on the dose., Mar 18, 2024 · Dayquil Cold and Flu is a combination of three active ingredients: acetaminophen (an analgesic), dextromethorphan (a cough suppressant), and phenylephrine (a decongestant). Dayquil Cold and Flu helps treat symptoms from the common cold and flu in adults and children. It can relieve stuffy nose, cough, sore throat, headache, aches, and fever. , Bloomberg / Getty Images. DayQuil Ingredients. DayQuil is available in either a gel cap or syrup formulation. Both are orange-colored (in contrast to their nighttime counterpart, NyQuil, which is green). The …, A committee advising the US airline regulator has concluded that hand-held electronic devices can be connected to Wi-Fi at all points in a flight, according to the Wall Street Jour..., The difference between DayQuil and NyQuil. NyQuil for sleep and DayQuil for sleep in both their liquid and pill forms can be used to help provide relief for common symptoms associated with a cold and flu. There’s one key difference between the two: NyQuil will cause drowsiness, while DayQuil is a non-drowsy drug., Dayquil. Benadryl. Tylenol sinus. ... The biggest difference between the two is that pseudoephedrine has been proven effective in addressing congestion when taken orally, while phenylephrine has ..., Takeaway. Mucinex and Nyquil Cold & Flu are two common over-the-counter remedies. They can be taken together, but not at night. Mucinex can cause …, info. Are you looking for information on NyQuil Cold and Flu (acetaminophen / dextromethorphan / doxylamine) instead? When does Dayquil Cold and Flu start …, DayQuil and NyQuil COMPLETE™ + Vicks VapoCOOL Cold & Flu provide fast and effective, all-in-one cold & flu symptom relief, with a cooling flavour sensation that will ripple through your senses. DayQuil COMPLETE + Vicks VapoCOOL relieves: nasal congestion and pain, chest congestion, cough due to cold, cough with phlegm, sore throat pain ... , DayQuil and NyQuil High Blood Pressure are also decongestant free, unlike some ordinary cold medicines. With this DayQuil and NyQuil combo pack, you'll have the cold and flu multi-symptom relief you need on hand, day and night. Helps treat bothersome symptoms like headache, fever, minor aches and pains, sore throat, and cough., dangerously high blood pressure (severe headache, blurred vision, buzzing in your ears, chest pain, shortness of breath, uneven heartbeats, seizure). Common side effects of Nyquil Vapocool may include: feeling restless or excited. This is not a complete list of side effects and others may occur., Conclusion. The main difference between NyQuil and DayQuil is that NyQuil contains an antihistamine, while DayQuil does not. Both medications are meant to be taken when you have a cold or the flu, but they work in different ways. NyQuil is designed to help you sleep, while DayQuil is meant to help you feel more alert., Mucinex vs. DayQuil: What's the Difference? Allergies. Nose & Eye Allergies. Mucinex vs. DayQuil: Similarities and Differences. By Rosanna Sutherby, …, Official answer. by Drugs.com. The main difference is that DayQuil is a non-drowsy formula with the decongestant phenylephrine to help treat your cold or flu symptoms during the day, while many NyQuil products contain a sedating antihistamine and can help you sleep at night.